import axios from "axios"
import { ElNotification, ElMessageBox, ElMessage, ElLoading } from "element-plus"
import { getToken } from "@/utils/auth"
import errorCode from "@/utils/errorCode"
import { tansParams, blobValidate } from "@/utils/ruoyi"
import cache from "@/plugins/cache"
import { saveAs } from "file-saver"
import useUserStore from "@/store/modules/user"
import { getRuntimeConfig } from "@/utils/env"

let downloadLoadingInstance
// 是否显示重新登录
export let isRelogin = { show: false }

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8"

// 获取运行时配置
const config = getRuntimeConfig()

// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: config.API_BASE_URL,
  // 超时
  timeout: 10000,
})

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
      config.headers["Authorization"] = "Bearer " + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // 添加租户id
    config.headers["tenant_id"] = useUserStore().tenantId
    // get请求映射params参数
    if (config.method === "get" && config.params) {
      let url = config.url + "?" + tansParams(config.params)
      url = url.slice(0, -1)
      config.params = {}
      config.url = url
    }
    if (!isRepeatSubmit && (config.method === "post" || config.method === "put")) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === "object" ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime(),
      }
      const requestSize = Object.keys(JSON.stringify(requestObj)).length // 请求数据大小
      const limitSize = 5 * 1024 * 1024 // 限制存放数据5M
      if (requestSize >= limitSize) {
        console.warn(`[${config.url}]: ` + "请求数据大小超出允许的5M限制，无法进行防重复提交验证。")
        return config
      }
      const sessionObj = cache.session.getJSON("sessionObj")
      if (sessionObj === undefined || sessionObj === null || sessionObj === "") {
        cache.session.setJSON("sessionObj", requestObj)
      } else {
        const s_url = sessionObj.url // 请求地址
        const s_data = sessionObj.data // 请求数据
        const s_time = sessionObj.time // 请求时间
        const interval = 1000 // 间隔时间(ms)，小于此时间视为重复提交
        if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
          const message = "数据正在处理，请勿重复提交"
          console.warn(`[${s_url}]: ` + message)
          return Promise.reject(new Error(message))
        } else {
          cache.session.setJSON("sessionObj", requestObj)
        }
      }
    }
    return config
  },
  (error) => {
    console.log(error)
    Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode["default"]
    // 二进制数据则直接返回
    if (res.request.responseType === "blob" || res.request.responseType === "arraybuffer") {
      return res.data
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true
        ElMessageBox.confirm("登录状态已过期，您可以继续留在该页面，或者重新登录", "系统提示", {
          confirmButtonText: "重新登录",
          cancelButtonText: "取消",
          type: "warning",
        })
          .then(() => {
            isRelogin.show = false
            useUserStore()
              .logOut()
              .then(() => {
                location.href = "/index"
              })
          })
          .catch(() => {
            isRelogin.show = false
          })
      }
      return Promise.reject("无效的会话，或者会话已过期，请重新登录。")
    } else if (code === 500) {
      ElMessage({ message: msg, type: "error" })
      return Promise.reject(new Error(msg))
    } else if (code === 601) {
      ElMessage({ message: msg, type: "warning" })
      return Promise.reject(new Error(msg))
    } else if (code !== 200) {
      ElNotification.error({ title: msg })
      return Promise.reject("error")
    } else {
      return Promise.resolve(res.data)
    }
  },
  (error) => {
    console.log("err" + error)
    let { message, response } = error
    if (response && response.data && response.data.msg) {
      message = response.data.msg
    } else if (message == "Network Error") {
      message = "后端接口连接异常"
    } else if (message.includes("timeout")) {
      message = "系统接口请求超时"
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常"
    }
    ElMessage({ message: message, type: "error", duration: 5 * 1000 })
    return Promise.reject(error)
  }
)

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({ text: "正在下载数据，请稍候", background: "rgba(0, 0, 0, 0.7)" })
  return service
    .post(url, params, {
      transformRequest: [
        (params) => {
          return tansParams(params)
        },
      ],
      headers: { "Content-Type": "application/x-www-form-urlencoded" },
      responseType: "blob",
      ...config,
    })
    .then(async (data) => {
      const isBlob = blobValidate(data)
      if (isBlob) {
        const blob = new Blob([data])
        saveAs(blob, filename)
      } else {
        const resText = await data.text()
        const rspObj = JSON.parse(resText)
        const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode["default"]
        ElMessage.error(errMsg)
      }
      downloadLoadingInstance.close()
    })
    .catch((r) => {
      console.error(r)
      ElMessage.error("下载文件出现错误，请联系管理员！")
      downloadLoadingInstance.close()
    })
}

export default service
